we can query the parent “class” to find out the elements of that “class”. The elements of that class will, of course, have names of their own. You can do this with the use of the getElementsByClassName. Does
functiongetElementsByClassName(node,classname) {if(node.getElementsByClassName) {//use native implementation if availablereturnnode.getElementsByClassName(classname); }else{return(functiongetElementsByClass(searchClass,node) {if( node ==null) node=document;varclassElements =[], els= node.getElementsByTagName...
If you want to access a group of elements in Javascript by class, then using thegetElementsByClassNameorquerySelectorAllmethods are your two best options. Both return the same results, BUT thegetElementsByClassNamemethodisfasteraccordingour performance tests. However, if your goal is to get just on...
*/ /* obtain elements : there are three functions can obtain element nodes => via id, tag name, class name;*/ console.log(typeof document.getElementById("purchases")); /* It will show "object" in browser */ console.log(document.getElementsByTagName("li").length); /* this function...
log(form.elements[i].value) // yoyo } 以下HTML 对象(和对象集合)也是可访问的: document.anchors document.body document.documentElement document.embeds document.forms document.head document.images document.links document.scripts document.title 2022年第 11 期《python接口web自动化+测试开发》课程,6月...
{varresults=Array();varelements=node.getElementsByTagName('*');for(vari=0;i<elements.length;i++){if(elements[i].className.indexOf(classname)!=-1){results[results.length]=elements[i];}}returnresults;}}alert(getElementsByClassName_zdy(document.getElementById('target'),'a').length)...
例如：const elements = document.getElementsByClassName('my-class');document.getElementsByTagName()：...
getElementsByClassName 是用过标签的 class 名称来获取标签的。因为页面中可能有多个元素的 class 名称一...
Vue Js Get Element By Class Name: In Vue.js, you can use the querySelectorAll method of the document object to get an array of elements with a specific class name. Once you have the array of elements, you can manipulate them using JavaScript to
console.log(returnElements(div[0])); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 4:attributes(元素节点属性的集合) 比如这个div就要俩个属性class='demo'和id='cyl' var div=document.getElementsByTagName('div'); ...